Rider reopen projects when adding new C++ classes in Unreal Editor

Problem

When a new C++ class is added in Unreal Editor, Rider will reload and try to open the UE project in a separate window.

Cause

Source code editor settings in Unreal Editor show match the way of opening the UE project.

Resolution

In Unreal Editor, goto Edit | Editor Preferences | General | Source Code, check the source code editor setting:

Rider supports opening both .uproject and .sln solution files.

• If you open the solution with .sln , use "Rider" as the editor entry.
• If you open the solution wiht .uproject, use "Rider Uproject" then.